Patents by Inventor David Towne
David Towne has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 12142890Abstract: Embodiments of the present disclosure include optical transmitters and transceivers with improved reliability. In some embodiments, the optical transmitters are used in network devices, such as in conjunction with a network switch. In one embodiment, lasers are operated at low power to improve reliability and power consumption. The output of the laser may be modulated by a non-direct modulator and received by integrated optical components, such as a modulator and/or multiplexer. The output of the optical components may be amplified by a semiconductor optical amplifier (SOA). Various advantageous configurations of lasers, optical components, and SOAs are disclosed. In some embodiments, SOAs are configured as part of a pluggable optical communication module, for example.Type: GrantFiled: January 31, 2023Date of Patent: November 12, 2024Assignee: ARISTA NETWORKS, INC.Inventors: Alexey Kovsh, David Towne, Peter Parkinson, Andreas Bechtolsheim
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Patent number: 12063064Abstract: A method for managing optical transceivers includes obtaining laser measurements for a laser operating in an optical transceiver in a network device, obtaining a failure profile for the laser, making a first determination that the laser measurements match the failure profile, and based on the first determination, initiating a remediation action for the optical transceiver.Type: GrantFiled: March 16, 2023Date of Patent: August 13, 2024Assignee: Arista Networks, Inc.Inventors: Alexey Kovsh, David Towne
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Publication number: 20230231358Abstract: Embodiments of the present disclosure include optical transmitters and transceivers with improved reliability. In some embodiments, the optical transmitters are used in network devices, such as in conjunction with a network switch. In one embodiment, lasers are operated at low power to improve reliability and power consumption. The output of the laser may be modulated by a non-direct modulator and received by integrated optical components, such as a modulator and/or multiplexer. The output of the optical components may be amplified by a semiconductor optical amplifier (SOA). Various advantageous configurations of lasers, optical components, and SOAs are disclosed. In some embodiments, SOAs are configured as part of a pluggable optical communication module, for example.Type: ApplicationFiled: January 31, 2023Publication date: July 20, 2023Inventors: Alexey Kovsh, David Towne, Peter Parkinson, Andreas Bechtolsheim
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Publication number: 20230224031Abstract: A method for managing optical transceivers includes obtaining laser measurements for a laser operating in an optical transceiver in a network device, obtaining a failure profile for the laser, making a first determination that the laser measurements match the failure profile, and based on the first determination, initiating a remediation action for the optical transceiver.Type: ApplicationFiled: March 16, 2023Publication date: July 13, 2023Inventors: Alexey Kovsh, David Towne
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Patent number: 11632170Abstract: A method for managing optical transceivers includes obtaining laser measurements for a laser operating in an optical transceiver in a network device, obtaining a failure profile for the laser, making a first determination that the laser measurements match the failure profile, and based on the first determination, initiating a remediation action for the optical transceiver.Type: GrantFiled: June 4, 2020Date of Patent: April 18, 2023Assignee: Arista Networks, Inc.Inventors: Alexey Kovsh, David Towne
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Patent number: 11594854Abstract: Embodiments of the present disclosure include optical transmitters and transceivers with improved reliability. In some embodiments, the optical transmitters are used in network devices, such as in conjunction with a network switch. In one embodiment, lasers are operated at low power to improve reliability and power consumption. The output of the laser may be modulated by a non-direct modulator and received by integrated optical components, such as a modulator and/or multiplexer. The output of the optical components may be amplified by a semiconductor optical amplifier (SOA). Various advantageous configurations of lasers, optical components, and SOAs are disclosed. In some embodiments, SOAs are configured as part of a pluggable optical communication module, for example.Type: GrantFiled: July 24, 2020Date of Patent: February 28, 2023Assignee: Arista Networks, Inc.Inventors: Alexey Kovsh, David Towne, Peter Parkinson, Andreas Bechtolsheim
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Patent number: 11557875Abstract: Embodiments of the present disclosure include optical transmitters and transceivers with improved reliability. In some embodiments, the optical transmitters are used in network devices, such as in conjunction with a network switch. In one embodiment, lasers are operated at low power to improve reliability and power consumption. The output of the laser may be modulated by a non-direct modulator and received by integrated optical components, such as a modulator and/or multiplexer. The output of the optical components may be amplified by a semiconductor optical amplifier (SOA). Various advantageous configurations of lasers, optical components, and SOAs are disclosed. In some embodiments, SOAs are configured as part of a pluggable optical communication module, for example.Type: GrantFiled: July 24, 2020Date of Patent: January 17, 2023Assignee: ARISTA NETWORKS, INC.Inventors: Alexey Kovsh, David Towne, Peter Parkinson, Andreas Bechtolsheim
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Publication number: 20220320826Abstract: Embodiments of the present disclosure are directed to a semiconductor optical amplifier including a semiconductor-based gain medium configured to receive a drive current and a variable-width waveguide coupled to the in the semiconductor-based gain medium, the variable-width waveguide including a plurality of narrow width regions and a plurality of wide width regions positioned alternately along a longitudinal axis of the waveguide. The variable-width waveguide further includes a plurality of transition regions having an adiabatically varying widths. Each transition region connects adjacent ones of the plurality of narrow width and width regions and the waveguide has a reduced drive current density in the plurality of wide width regions relative to the drive current density in the plurality of narrow width regions.Type: ApplicationFiled: April 2, 2021Publication date: October 6, 2022Inventors: Alexey Kovsh, David Towne, Peter Parkinson
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Publication number: 20220320821Abstract: A semiconductor optical amplifier (SOA) receives a multiwavelength input optical signal and amplifies the multiwavelength input optical signal to generate an amplified multiwavelength optical signal. A waveguide is coupled to receive the amplified multiwavelength optical signal. The waveguide includes an enhanced chromatic dispersion segment configured to increase chromatic dispersion experienced by the multiwavelength optical signal as the multiwavelength optical signal propagates through the waveguide and is amplified by the SOA. This increase in chromatic dispersion reduces noise, such as four-wave mixing noise, in the amplified multiwavelength optical signal.Type: ApplicationFiled: April 2, 2021Publication date: October 6, 2022Inventors: Alexey Kovsh, David Towne, Peter Parkinson
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Publication number: 20220029379Abstract: Embodiments of the present disclosure include optical transmitters and transceivers with improved reliability. In some embodiments, the optical transmitters are used in network devices, such as in conjunction with a network switch. In one embodiment, lasers are operated at low power to improve reliability and power consumption. The output of the laser may be modulated by a non-direct modulator and received by integrated optical components, such as a modulator and/or multiplexer. The output of the optical components may be amplified by a semiconductor optical amplifier (SOA). Various advantageous configurations of lasers, optical components, and SOAs are disclosed. In some embodiments, SOAs are configured as part of a pluggable optical communication module, for example.Type: ApplicationFiled: July 24, 2020Publication date: January 27, 2022Inventors: Alexey Kovsh, David Towne, Peter Parkinson, Andreas Bechtolsheim
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Publication number: 20220029380Abstract: Embodiments of the present disclosure include optical transmitters and transceivers with improved reliability. In some embodiments, the optical transmitters are used in network devices, such as in conjunction with a network switch. In one embodiment, lasers are operated at low power to improve reliability and power consumption. The output of the laser may be modulated by a non-direct modulator and received by integrated optical components, such as a modulator and/or multiplexer. The output of the optical components may be amplified by a semiconductor optical amplifier (SOA). Various advantageous configurations of lasers, optical components, and SOAs are disclosed. In some embodiments, SOAs are configured as part of a pluggable optical communication module, for example.Type: ApplicationFiled: July 24, 2020Publication date: January 27, 2022Inventors: Alexey Kovsh, David Towne, Peter Parkinson, Andreas Bechtolsheim
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Publication number: 20210384969Abstract: A method for managing optical transceivers includes obtaining laser measurements for a laser operating in an optical transceiver in a network device, obtaining a failure profile for the laser, making a first determination that the laser measurements match the failure profile, and based on the first determination, initiating a remediation action for the optical transceiver.Type: ApplicationFiled: June 4, 2020Publication date: December 9, 2021Inventors: Alexey Kovsh, David Towne